Home / 138,450,903.40-191,121,078.30-86,265,722.44

Finding the Fourth Proportional to 138,450,903.40, 191,121,078.30 and 86,265,722.44

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Solution

The fourth proportional to 138,450,903.40, 191,121,078.30 and 86,265,722.44 is: 119,083,353.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,450,903.40 : 191,121,078.30 = 86,265,722.44 : x
  2. Step 2: Convert to fraction form
    138,450,903.40/191,121,078.30 = 86,265,722.44/x
  3. Step 3: Cross multiply
    138,450,903.40x = 191,121,078.30 × 86,265,722.44
  4. Step 4: Simplify right side
    138,450,903.40x = 16,487,197,893,061,308
  5. Step 5: Solve for x
    x = 16,487,197,893,061,308/138,450,903.40
  6. Step 6: Final answer
    x = 119,083,353.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.